D-Link DPH-150S - Manual (Page 31)

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6.13. VoIP – SIP Settings (SIP Phone Setting, Registrar & Outbound Proxy Server)
SIP Phone Port Number SIP phone port number.
Registrar Server Domain
Name/IP Address
Registrar server domain name or IP address.
Registrar Server Port
Number
Registrar server listening port.
Authentication Expire
Time
The time after which the registration on SIP Registrar expires. The phone must
send SIP REGISTER to keep the registration at half of the setting time.
Outbound Proxy Domain
Name/IP Address
Outbound proxy domain name or IP address.
Outbound Proxy Port
Number
Outbound proxy listening port.
Send message via
Outbound Proxy
Select Enable to send all SIP requests through Outbound Proxy.